You'll get more for your money choosing an LDO which is made via CMOS and has a maximum voltage rating of about 6V, since your max supply is less than 4.5V. A 16V device is payng extra for something you don't need. Nat Semi had a bunch of these, Linear Tech and Maxim do as well. You want to get the lowest dropout for the $ at the load current you desire (which you did not list).